The present research investigates Marine Current Turbine (MCT), an exciting proposition for the extraction of tidal and marine current power. CFD simulation is being widely used in the research on MCT. Solution of incom- pressible unsteady Navier-Stokes (N-S) equations is required in the numerical simulation of flow around MCT. Large Eddy Simulation (LES) has been opted which fully resolves the energetic turbulent flow structures and models only the sub-grid scale turbulence. IB method has been used to enforce the boundary conditions on complex geometry. Due to computational limitations, only a coarse grid LES of the marine turbine for specific operating conditions have been performed. Nevertheless, the results provide insights into the flow structures around the marine turbine. Analysis shows that the effect of vorticity diminishes after 11R from the turbine rotor blade. However, the velocity deficit region remains until the end of the domain used in our simulations which is 10D distance downstream of the rotor blades.

1. IRENA, “Remap: Roadmap for a renewable energy future,” International Renewable Energy Agency, Abu Dhabi, UAE, Tech. Rep., 2016.
2. IRENA, “Tidal energy technology brief, IRENAocean energy technology brief 4,” IRENA Innovation and Technology Centre, Bonn, Germany, Tech. Rep., 2014.
3. IRENA, “Tidal energy technology brief, IRENAocean energy technology brief 3,” IRENA Innovation and Technology Centre, Bonn, Germany, Tech. Rep., 2014.
4. AFD-IREDA, “Study on tidal & waves energy in india: Survey on the potential & proposition of a roadmap,” Indian Renewable Energy Development Agency Limited (IREDA), New Delhi, India, Tech. Rep., 2014.
5. L. Blunden and A. Bahaj, “Initial evaluation of tidal stream energy resources at Portland Bill, UK,” Renewable Energy, vol. 31, no. 2, pp. 121–132, 2006. doi: https://doi.org/10.1016/j.renene.2005.08.016
6. D. Li, S. Wang, and P. Yuan, “An overview of development of tidal current in China: Energy resource, conversion technology and opportunities,” Renewable and Sustainable Energy Reviews, vol. 14, no. 9, pp. 2896–2905, 2010. doi: https://doi.org/10.1016/j.rser.2010.06.001
7. V. B. Miller, E. W. Ramde, R. T. Gradoville, and L. A. Schaefer, “Hydrokinetic power for energy access in rural Ghana,” Renewable Energy, vol. 36, no. 2, pp. 671–675, 2011. doi: https://doi.org/10.1016/j.renene.2010.08.014
8. M. Esteban and D. Leary, “Current developments and future prospects of offshore wind and ocean energy,” Applied Energy, vol. 90, pp. 128–136, 2012. doi: http://dx.doi.org/10.1016/j.apenergy.2011.06.011
9. I. A. Milne, R. N. Sharma, R. G. J. Flay, and S. Bickerton, “Characteristics of the turbulence in the flow at a tidal stream power site,” Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, vol. 371, no. 1985, p.20120196, 2013. doi: https://doi.org/10.1098/rsta.2012.0196
10. A. S. Bahaj, W. M. J. Batten, and G. Mccann,“Experimental verifications of numerical predictions for the hydrodynamic performance of horizontal axis marine current turbines,” Renewable Energy, vol. 32, pp. 2479–2490, 2007. doi: https://doi.org/10.1016/j.renene.2007.10.001
11. A. N. Oumer, N. T. Rao, F. Basrawi, and H. Ibrahim,“Numerical simulation on flow and heat transfer characteristics of supercritical fluids in minichannels,” Journal of Advances in Technology and Engineering Research, vol. 2, no. 3, pp. 81–86, 2016. doi: https://doi.org/10.20474/jater-2.3.2
12. O. A. Hussein and T. K. Salem, “Mixed convective nano fluids over vertical channel having forward-facing step flow having a baffle,” Journal of Advances in Technology and Engineering Research, vol. 2, no. 6, pp. 189–195, 2016. doi: https://doi.org/10.20474/jater-2.6.3
13. M. E. Harrison, W. M. J. Batten, L. E. Myers, andA. S. Bahaj, “A comparison between CFD simulations and experiments for predicting the far wake of horizontal axis tidal turbines,” in Proceedings of the 8th European Wave and Tidal Energy Conference, Uppsala, Sweden, 2009, pp. 566–575.
14. T. O. Doherty, A. Mason-Jones, D. M. O. Doherty,C. B. Byrne, I. Owen, and Y. X. Wang, “Experimental and computational analysis of a model horizontal axis tidal turbine,” in 8th European Wave and Tidal Energy Conference, Uppsala, Sweden, 2009, pp. 833–841.
15. M. Khan, G. Bhuyan, M. Iqbal, and J. Quaicoe, “Hydrokinetic energy conversion systems and assessment of horizontal and vertical axis turbines for river and tidal applications: A technology status review,” Applied Energy, vol. 86, no. 10, pp. 1823–1835, 2009. doi: https://doi.org/10.1016/j.apenergy.2009.02.01
16. M. Guney and K. Kaygusuz, “Hydrokinetic energy conversion systems: A technology status review,” Renewable and Sustainable Energy Reviews, vol. 14, no. 9, pp. 2996–3004, 2010. doi: https://doi.org10.1016/j.rser.2010.06.016
17. L. Lago, F. Ponta, and L. Chen, “Advances and trends in hydrokinetic turbine systems,” Energy for Sustainable Development, vol. 14, no. 4, pp. 287–296, 2010. doi: https://doi.org/10.1016/j.esd.2010.09.004
18. M. Anyi and B. Kirke, “Energy for sustainable development evaluation of small axial flow hydrokinetic turbines for remote communities,” Energy for Sustainable Development, vol. 14, no. 2, pp. 110–116, 2010.
19. Y. Li and S. M. Calisal, “Three-dimensional effects and arm effects on modeling a vertical axis tidal current turbine,” Renewable Energy, vol. 35, no. 10, pp. 2325–2334, 2010. doi: https://doi.org/10.1016/j.renene.2010.03.002
20. M. Amelio, S. Barbarelli, G. Florio, N. M. Scornaienchi, G. Minniti, A. Cutrupi, and M. Sanchez-Blanco, “Innovative tidal turbine with central deflector for the exploitation of river and sea currents in on-shore installations,” Applied Energy, vol. 97, pp. 944–955, 2012.
21. R. Hassanzadeh, O. bin Yaakob, M. M. Taheri,M. Hosseinzadeh, and Y. M. Ahmed, “An innovative configuration for new marine current turbine, ”Renewable Energy, vol. 120, pp. 413–422, 2018. doi: https://doi.org/10.1016/j.renene.2017.11.095
22. D. L. Gaden and E. L. Bibeau, “A numerical investigation into the effect of diffusers on the performance of hydro kinetic turbines using a validated momentum source turbine model,” Renewable Energy, vol. 35, no. 6, pp. 1152–1158, 2010. doi: https://doi.org/10.1016/j.renene.2009.11.023
23. W. Batten, A. Bahaj, A. Molland, and J. Chaplin, “The prediction of the hydrodynamic performance of marine current turbines,” Renewable Energy, vol. 33, no. 5, pp. 1085–1096, 2008. doi: https://doi.org/10.1016/j.renene.2007.05.043
24. Q. Hu, Y. Li, Y. Di, and J. Chen, “A large-eddy simulation study of horizontal axis tidal turbine in different inflow conditions,” Journal of Renewable and Sustainable Energy, vol. 9, no. 6, p. 064501, 2017. doi: https://doi.org/10.1063/1.5011061
25. X. Bai, E. Avital, A. Munjiza, and J. Williams, “Numerical simulation of a marine current turbine in free surface flow,” Renewable Energy, vol. 63, pp. 715–723, 2014. doi: https://doi.org/10.1016/j.renene.2013.09.042
26. T. Blackmore, L. E. Myers, and A. S. Bahaj, “Effects of turbulence on tidal turbines: Implications to performance, blade loads, and condition monitoring,” International Journal of Marine Energy, vol. 14, pp. 1–26, 2016. doi: https://doi.org/10.1016/j.ijome.2016.04.017

A. Maity and K. M. Singh, “Large eddy simulation of flow around marine turbine,” International Journal of Technology and Engineering Studies, vol. 5, no. 3, pp. 71–79, 2019.